Year | Value | 2021 | 74.087 | 2020 | 74.632 | 2019 | 77.168 | 2018 | 77.037 | 2017 | 76.873 | 2016 | 76.639 | 2015 | 76.404 | 2014 | 76.114 | 2013 | 75.786 | 2012 | 75.73 | 2011 | 75.693 | 2010 | 75.493 | 2009 | 75.316 | 2008 | 75.163 | 2007 | 75.1 | 2006 | 74.243 | 2005 | 74.033 | 2004 | 73.786 | 2003 | 73.499 | 2002 | 73.22 | 2001 | 72.921 | 2000 | 72.646 | 1999 | 72.401 | 1998 | 72.19 | 1997 | 70.773 | 1996 | 71.669 | 1995 | 71.428 | 1994 | 71.202 | 1993 | 70.957 | 1992 | 70.66 | 1991 | 70.321 | 1990 | 70.05 | 1989 | 69.853 | 1988 | 69.643 | 1987 | 69.476 | 1986 | 69.12 | 1985 | 68.84 | 1984 | 68.705 | 1983 | 68.551 | 1982 | 68.354 | 1981 | 68.194 | 1980 | 68.048 | 1979 | 67.384 | 1978 | 67.117 | 1977 | 66.964 | 1976 | 66.537 | 1975 | 66.121 | 1974 | 65.55 | 1973 | 64.866 | 1972 | 64.037 | 1971 | 63.222 | 1970 | 62.407 | 1969 | 61.426 | 1968 | 60.401 | 1967 | 59.409 | 1966 | 58.328 | 1965 | 57.358 | 1964 | 56.313 | 1963 | 55.071 | 1962 | 53.82 | 1961 | 52.618 | 1960 | 51.365 |
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